On 3/31/21 10:51 AM, glittao@xxxxxxxxx wrote: > From: Oliver Glitta <glittao@xxxxxxxxx> > > SLUB has resiliency_test() function which is hidden behind #ifdef > SLUB_RESILIENCY_TEST that is not part of Kconfig, so nobody > runs it. KUnit should be a proper replacement for it. > > Try changing byte in redzone after allocation and changing > pointer to next free node, first byte, 50th byte and redzone > byte. Check if validation finds errors. > > There are several differences from the original resiliency test: > Tests create own caches with known state instead of corrupting > shared kmalloc caches. > > The corruption of freepointer uses correct offset, the original > resiliency test got broken with freepointer changes. > > Scratch changing random byte test, because it does not have > meaning in this form where we need deterministic results. > > Add new option CONFIG_SLUB_KUNIT_TEST in Kconfig. > > Add a counter field "errors" to struct kmem_cache to count number > of errors detected in cache. > > Silence bug report in SLUB test. Add SLAB_SILENT_ERRORS debug flag. > Add SLAB_SILENT_ERRORS flag to SLAB_NEVER_MERGE, SLAB_DEBUG_FLAGS, > SLAB_FLAGS_PERMITTED macros. > > Signed-off-by: Oliver Glitta <glittao@xxxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
